These two meetings are the culmination of long, intensive processes, and present governments across the world with the chance to make bold decisions. If they rise to the challenge, they can set us all on a path to address the inter-connected crises of poverty, inequality, environmental degradation and climate change.

The affordability of food requires populations to have access to enough nutritional produce at a stable price. For farmers to see a return on their produce, it must retain its value in transit and be kept fresh.

Standing in Chautara village, I got a 360 degree view of rubble-lined streets, buildings that had been yanked from their foundations and homes teetering off the hilltops. This is the true scale of devastation left by the Nepal earthquake.

Allowing your employees to have input in the business is also a sign that you respect them. You also need to accept the fact that there are some things where your employees are better than you. Giving people credit for their skills is one of the ways you can earn respect.

In the UK, NHS staffing is at the top of the news agenda with the reliance on agency staff as a result of NHS shortages making the headlines. Health worker shortages are not just an issue for the UK however. Globally we are short of 7.2million. This is more than just a shortage - this is a crisis.

One of the rocks that climate change sceptics like to throw at those advocating action to tackle climate change is that it's all very well for the rich developed world to reduce its carbon footprint but it's immoral to ask the world's poor to give up cheap energy such as coal. Yes, climate change may be happening, they say, but it's unfair to pull up the fossil fuel ladder from developing countries.

As governments, policy makers, academics and civil society gather together, it is time to call for a new approach that puts public health, human rights and development at the heart of global drugs policy.

I would like to congratulate you on your election, especially amongst such an experienced and talented field. I wish you well in continuing to raise the influence and impact of the Bank as Africa's pre-eminent financial institution, and in playing its part in the continent's sustainable and inclusive growth.

Belu started with a simple idea - to transform the bottled water industry by reducing the sector's environmental impact and using 100% of its profits to fund clean water projects in the world's poorest communities. From humble beginnings, this mineral water has made a huge impact.

If you walk down a residential street in central London, the chances are that some, perhaps the majority, of property is owned by overseas buyers. You might wonder who they are. To find out, your first port of call would be the Land Registry, which lists who owns property in England and Wales. What this might tell you is that many properties are indeed owned by overseas buyers - but not the ones you would expect.

Too often, the great promise of campaigns and programmes is lost or undermined when the funding ends and the funders move on, looking for the next innovation. Or a new issue comes along and takes the headlines, and with it donor attention and dollars.

2015 gives me hope, but we need faith in the political system, in businesses, in civil society and in the people running them to ensure that the promise of the SDGs is fulfilled and the global economy works for all communities, now and in the future.

As the Ebola crisis in West Africa begins to ease, there is equal cause for hope and fear. The news that infections have slowed to fewer than 100 new cases per week is cause for optimism. But as the fight against Ebola moves into this next stage, there is still so much work to be done.

Enough is enough though. This Red Nose Day, we want to help change and save thousands of lives by improving healthcare for communities across Africa. By combining your cash with local talent and determination we can make a huge difference and to demonstrate that we're going to follow the refurbishment of Iyolwa clinic by working with Ugandans like Gonza, a local architect who has come forward to lend his skills. Your support will not only help to refurbish this clinic, but will also help to improve healthcare for thousands of people in communities across Africa...

Nobody can yet comprehend the legacy that the current Ebola outbreak will leave. But that should galvanise us into action - it shows why 2015 must be the year to strengthen health systems and support innovative solutions that secure healthier lives and livelihoods.

Culture is often seen as marginal to the development process, outside the mainstream of economic, political and social policy debates. Or it is offered as an appendage to them, often invoked to explain the failure of well-meaning development interventions.

Africa does not need 'saving' as is conventionally assumed, however I envisage a truly collaborative effort from passionate, enlightened and courageous visionaries of all backgrounds as necessary to counter centuries of institutional marginalisation.

Ebola presents an unprecedented threat to Sierra Leone and other countries in West Africa, not just in terms of public health but also because of the outbreak's long-term social and economic impacts. The UK has taken the global lead in supporting the response and has committed significant resources. This recognises Britain's long standing links with Sierra Leone and ActionAid welcomes and fully supports this.